Sixty years ago, scientists embarked on an experiment to teach American Sign Language to chimpanzees—and ultimately prove humans are not alone in our ability to use language. The experiment was a ...

Chatty: There is a chimpanzee in Canada who begs for "ice cream" using sign language. Today, I'd like to share the story of ...

Jane Goodall's research at Gombe Stream National Park revolutionized our understanding of chimpanzee intelligence. In 1960, she observed a chimp named David Greybeard stripping leaves from twigs to ...